An inner-rotation ultrasonic detection front-end structure and an inner-rotation ultrasonic detection system comprising the same

Abstract

The utility model provides a kind of inner spin ultrasonic detection front-end structure and the inner spin ultrasonic detection system comprising it, solve the problem of existing inner spin ultrasonic detection process when encountering long deep pipe bundle, water filling trouble and labor, its main scheme includes: outer tube, the outer tube passes through its axial, its top end is assembled with external water inlet pipe by flat key, its bottom end is fixed with sealing sleeve, the sealing sleeve top is concave with water storage tank to store water, the outer tube is opened with multiple scanning ports in the outer wall of the shaft section close to bottom end, each scanning port is connected with the outer tube, the axial position of the ultrasonic probe corresponding to the outer tube is corresponding with the scanning port, the outer diameter of the outer tube is consistent with the outer diameter of the sealing sleeve, and they are all attached with the inner wall of external pipe bundle, by probe rotating ultrasonic scanning inside pipeline, can measure thickness to pipe in all aspects, detection result is intuitive, high precision, significantly improve detection efficiency and reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of internal rotation ultrasonic testing equipment, and in particular to an internal rotation ultrasonic testing front-end structure and an internal rotation ultrasonic testing system including the same. Background Technology

[0002] Leaks in heat exchanger tube bundles pose a significant hazard. Leaks of corrosive, flammable, explosive, or toxic media inside the tubes can damage equipment, cause safety accidents, pollute the environment, and threaten life and property.

[0003] Internal rotational ultrasonic testing is an effective means of identifying corrosion and leakage problems in heat exchanger tube bundles. By rotating the probe inside the pipe and scanning with ultrasound, the thickness of the pipe can be measured from all sides. The test results are intuitive and highly accurate, which significantly improves the efficiency of troubleshooting and reduces maintenance costs.

[0004] However, in existing ultrasonic testing processes, the tube bundle under test needs to be filled with water, and then the probe is rotated 360° by a water pump controlled by an external water pump to perform ultrasonic testing on defects in the inner wall of the tube bundle. However, in actual work, the length of the tube bundle is uncontrollable, and filling the tube bundle with water is time-consuming and laborious. To address this, we propose an internal rotation ultrasonic testing front-end structure and an internal rotation ultrasonic testing system containing it to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defects of the existing technology. This utility model proposes an internal rotation ultrasonic detection front-end structure and an internal rotation ultrasonic detection system containing the same, which eliminates the need to fill the external tube bundle with water. It only needs to keep the water volume in the sealing sleeve continuously sufficient to indirectly realize the internal wall ultrasonic detection of deeper tube bundles.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an internal rotation ultrasonic detection front-end structure, including: an outer cylinder, the outer cylinder being axially continuous, its top end being assembled with an external water inlet pipe via a flat key, and its bottom end being threadedly fixed with a sealing sleeve, the top of the sealing sleeve having a recessed water storage tank for storing water, the outer cylinder having multiple scanning ports on the outer wall of the axial section near the bottom end, each of the scanning ports communicating with the inside of the outer cylinder, after the outer cylinder is assembled with the external water inlet pipe, the axial position of the corresponding ultrasonic probe corresponds to the scanning port, the outer diameter of the outer cylinder is consistent with the outer diameter of the sealing sleeve, and both are in contact with the inner wall of the external tube bundle.

[0007] Furthermore, the scanning ports include three and are equidistantly surrounding the axis of the outer cylinder, with adjacent scanning ports separated by thin plates.

[0008] Furthermore, the axial height of the scanning port corresponds to the length of the external probe.

[0009] Furthermore, the top of the sealing sleeve has a protruding connecting part, and the outer wall of the connecting part is threaded to be threaded to the bottom of the inner wall of the outer cylinder.

[0010] Furthermore, after the connecting part is threadedly fixed to the outer cylinder, the outer wall of the sealing sleeve can be connected to the outer wall of the outer cylinder to form a whole.

[0011] Furthermore, multiple sets of centering mechanisms can be fixed to the outer wall of the external water inlet pipe to center the probe axially.

[0012] An internal rotation ultrasound detection system includes the aforementioned internal rotation ultrasound detection front-end structure.

[0013] Compared with the prior art, the beneficial effects of this utility model include: the outer cylinder can be assembled and connected with the external water pipe, and the sealing sleeve at the bottom of the outer cylinder can store water. When performing ultrasonic testing on deeper tube bundles, it is not necessary to fill the tube bundle with water. It is only necessary to keep the water in the sealing sleeve continuously sufficient, thereby indirectly realizing ultrasonic testing on the inner wall of deeper tube bundles. It is convenient, reliable, simple in structure, and highly practical. Attached Figure Description

[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0015] Figure 1 The diagram schematically shows an isometric view of the front-end structure according to one embodiment of the present invention.

[0016] Figure 2 The schematic diagram shows a front view of the front structure according to one embodiment of the present invention;

[0017] Figure 3 The illustration schematically shows a method proposed according to one embodiment of the present invention. Figure 2 Side sectional view.

[0018] The following are the labels in the diagram: 1. Outer cylinder; 2. Sealing sleeve; 3. Water storage tank; 4. Scanning port; 5. Thin plate; 6. Connecting part; 7. Thread. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0020] According to one embodiment of the present invention, in conjunction with Figures 1-3 As shown.

[0021] In this embodiment, an internal rotation ultrasonic detection front-end structure includes an outer cylinder 1, which is axially continuous. Its top end is assembled with an external water inlet pipe via a flat key, and a sealing sleeve 2 is fixed to its bottom end by a thread 7. A water storage tank 3 is recessed at the top of the sealing sleeve 2 to store water. The outer cylinder 1 has multiple scanning ports 4 on the outer wall of the axial section near the bottom end. Each scanning port 4 is connected to the inside of the outer cylinder 1. After the outer cylinder 1 is assembled with the external water inlet pipe, the axial position of the corresponding ultrasonic probe corresponds to the scanning port 4. The outer diameter of the outer cylinder 1 is the same as the outer diameter of the sealing sleeve 2, and both are in contact with the inner wall of the external tube bundle.

[0022] Specifically, the scanning ports 4 include three ports that are equidistantly arranged around the axis of the outer cylinder 1, and adjacent scanning ports 4 are separated by a thin plate 5. The axial height of the scanning ports 4 corresponds to the length of the outer probe.

[0023] With the above structure, the outer cylinder 1 can be assembled and connected with the external water pipe, and the sealing sleeve 2 at the bottom of the outer cylinder 1 can store water. When performing ultrasonic testing on deeper tube bundles, it is not necessary to fill the tube bundle with water. Only the external water injection pipe and the external pump body need to continuously inject water, and then keep the water storage tank 3 in the sealing sleeve 2 continuously sufficient to meet the original water filling requirements of the external tube bundle, thereby indirectly realizing the ultrasonic testing of the inner wall of deeper tube bundles. It is convenient, reliable, simple in structure, and highly practical.

[0024] To ensure a more integrated structure for the outer cylinder 1 and smoother insertion of the tube bundle, the sealing sleeve 2 has a protruding connecting part 6 at its top. The outer wall of the connecting part 6 is threaded 7 to be fixed to the threaded bottom 7 of the inner wall of the outer cylinder 1. After the connecting part 6 is fixed to the threaded 7 of the outer cylinder 1, the outer wall of the sealing sleeve 2 can be seamlessly connected to the outer wall of the outer cylinder 1. This seamless, smooth outer wall allows for smooth contact with the inner wall of the tube bundle, making the testing process smoother.

[0025] Similarly, the internal rotation ultrasonic testing system, which includes the aforementioned internal rotation ultrasonic testing front-end structure, is also within the protection scope of this utility model. Accordingly, for the testing system, multiple sets of centering mechanisms can be fixed to the outer wall of the external water inlet pipe to center the probe axially. This centering structure can be referenced in patent publication CN222746897U, entitled "A Snake-like Robot for In-Depth Inspection of Small Pipes." The telescopic mechanism and crawling mechanism shown in its drawings can be used for the pipe inner wall centering crawling operation in this application. The actual structural selection can vary depending on different pipe diameters and working conditions, and will not be elaborated upon here.

[0026] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A front-end structure for internal rotation ultrasonic testing, characterized in that, include: The outer cylinder is axially continuous, and its top end is assembled with an external water inlet pipe via a flat key. A sealing sleeve is threadedly fixed to its bottom end. A water storage tank is recessed at the top of the sealing sleeve to store water. Multiple scanning ports are opened on the outer wall of the axial section near the bottom end of the outer cylinder. Each scanning port is connected to the inside of the outer cylinder. After the outer cylinder is assembled with the external water inlet pipe, the axial position of the corresponding ultrasonic probe corresponds to the scanning port. The outer diameter of the outer cylinder is the same as the outer diameter of the sealing sleeve, and both are in contact with the inner wall of the external tube bundle.

2. The internal rotation ultrasonic detection front-end structure according to claim 1, characterized in that: The scanning ports include three and are equidistantly arranged around the axis of the outer cylinder, with adjacent scanning ports separated by thin plates.

3. The internal rotation ultrasonic detection front-end structure according to claim 2, characterized in that: The axial height of the scanning port corresponds to the length of the external probe.

4. The inward-rotation ultrasonic detection front-end structure according to claim 1, characterized in that: The top of the sealing sleeve has a protruding connecting part, and the outer wall of the connecting part is threaded to be fixed with the bottom thread of the inner wall of the outer cylinder.

5. The internal rotation ultrasonic detection front-end structure according to claim 4, characterized in that: After the connecting part is fixed to the outer cylinder thread, the outer wall of the sealing sleeve can be connected to the outer wall of the outer cylinder to form a whole.

6. The inward-rotation ultrasonic detection front-end structure according to claim 1, characterized in that: Multiple centering mechanisms can be fixed to the outer wall of the external water inlet pipe to center the probe axially.

7. An internal rotation ultrasonic detection system, characterized in that: The invention comprises an internal rotation ultrasonic detection front-end structure as described in any one of claims 1-6.

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